46295 + Interview Questions in Chemistry

1.	The gas having the highest partial pressure in the atmosphere is –
Answer» The gas having the highest partial pressure in the atmosphere is –

Discussion

2.	Choose incorrect option
Answer» Choose incorrect option

Discussion

3.	Magnesium combines with nitrogen to form a nitride, which reacts with water to form a colourless gas. The gas is:
Answer» Magnesium combines with nitrogen to form a nitride, which reacts with water to form a colourless gas. The gas is:

Discussion

4.	The compound (T) is
Answer» The compound (T) is

Discussion

5.	What indicator should be used (in terms of its pKin)for the titration of 0.10 M KH2BO3 with 0.10 M HCl ?
Answer» What indicator should be used (in terms of its $p K_{i n}$ )for the titration of 0.10 M $K H_{2} B O_{3}$ with 0.10 M $H C l$ ?

Discussion

6.	Though bromine is less electronegative than fluorine BF3 is weaker Lewis acid than BBr3. Explain.
Answer» Though bromine is less electronegative than fluorine BF₃ is weaker Lewis acid than BBr_3. Explain.

Discussion

7.	Observe the following reaction, and select the correct option.
Answer» Observe the following reaction, and select the correct option.

Discussion

8.	Densities of two gases are in the ratio 1 : 2 and their temperatures are in the ratio 2 : 1, then the ratio of their respective pressures is
Answer» Densities of two gases are in the ratio 1 : 2 and their temperatures are in the ratio 2 : 1, then the ratio of their respective pressures is

Discussion

9.	Which one of the following nuclear transformation is (n, p ) type
Answer» Which one of the following nuclear transformation is (n, p ) type

Discussion

10.	Which of the following is used as moderator in nuclear reactor?
Answer» Which of the following is used as moderator in nuclear reactor?

Discussion

11.	A gaseous hydrocarbon gives upon combustion 0.72 g. of water and 3.08 g. of CO2. The empirical formula of the hydrocarbon is:
Answer» A gaseous hydrocarbon gives upon combustion 0.72 g. of water and 3.08 g. of CO₂. The empirical formula of the hydrocarbon is:

Discussion

12.	An amine 'X' reacts with Hinsberg reagent and the product thus obtained is soluble in KOH. The amine 'X' is
Answer» An amine 'X' reacts with Hinsberg reagent and the product thus obtained is soluble in KOH. The amine 'X' is

Discussion

13.	2-Methoxybutane is obtained by reacting diazomethane with
Answer» 2-Methoxybutane is obtained by reacting diazomethane with

Discussion

14.	Choose incorrect option-
Answer» Choose incorrect option-

Discussion

15.	The wave nature of an electron was first given by
Answer» The wave nature of an electron was first given by

15.

The wave nature of an electron was first given by

Answer»

The wave nature of an electron was first given by

Discussion

16.	The reduced temperature for benzene is 0.7277 and its reduced volume is 0.40. Calculate the reduced pressure of benzene.
Answer» The reduced temperature for benzene is 0.7277 and its reduced volume is 0.40. Calculate the reduced pressure of benzene.

Discussion

17.	The compound 'P' formed in the above reaction is used as an analgesic and antipyretic. How many C atoms are attached to N atom in the 'P' formed?
Answer» The compound 'P' formed in the above reaction is used as an analgesic and antipyretic. How many C atoms are attached to N atom in the 'P' formed?

Discussion

18.	The compound that is the most difficult to protonate is:
Answer» The compound that is the most difficult to protonate is:

Discussion

19.	Which of the following is non-classical carbocation ?
Answer» Which of the following is non-classical carbocation ?

Discussion

20.	The salt (A) is
Answer» The salt (A) is

20.

The salt (A) is

Answer»

The salt (A) is

Discussion

21.	p - block elements form acidic, basic and amphoteric oxides. Explain each property by giving two examples and also write the reactions of these oxides with water.
Answer» p - block elements form acidic, basic and amphoteric oxides. Explain each property by giving two examples and also write the reactions of these oxides with water.

Discussion

22.	The correct order of boiling point of hydrides of nitrogen family is
Answer» The correct order of boiling point of hydrides of nitrogen family is

Discussion

23.	QUESTION 2.14 What is meant by positive and negative deviations from Raoult's law and how the sign of ΔmixH related to positive and negative deviations from Raoult's law?
Answer» QUESTION 2.14 What is meant by positive and negative deviations from Raoult's law and how the sign of $Δ_{m i x} H$ related to positive and negative deviations from Raoult's law?

23.

QUESTION 2.14 What is meant by positive and negative deviations from Raoult's law and how the sign of ΔmixH related to positive and negative deviations from Raoult's law?

Answer»

QUESTION 2.14

What is meant by positive and negative deviations from Raoult's law and how the sign of $Δ_{m i x} H$ related to positive and negative deviations from Raoult's law?

Discussion

24.	What is the major product expected from the following reaction?
Answer» What is the major product expected from the following reaction?

Discussion

25.	The pH of milk, black coffee, tomato juice, lemon juice and egg white are 6.8, 5.0, 4.2, 2.2 and 7.8 respectively. Calculate corresponding hydrogen ion concentration in each.
Answer» The pH of milk, black coffee, tomato juice, lemon juice and egg white are 6.8, 5.0, 4.2, 2.2 and 7.8 respectively. Calculate corresponding hydrogen ion concentration in each.

Discussion

26.	Oxidants are substances that show:
Answer» Oxidants are substances that show:

Discussion

27.	Volume of a solution changes with change in temperature, then what will the molality of the solution be affected by temperature ? Give reason for your answer.
Answer» Volume of a solution changes with change in temperature, then what will the molality of the solution be affected by temperature ? Give reason for your answer.

Discussion

28.	The aromatic species is/are:
Answer» The aromatic species is/are:

Discussion

29.	Which will give most acidic solution at constant temperature when their equimolar solution is produced?
Answer» Which will give most acidic solution at constant temperature when their equimolar solution is produced?

Discussion

30.	In a cyclic process, heat transfers are +34.7 kJ , −15.2 kJ, −13.56 kJ and +21.5 kJ. What is the net work done in the process?
Answer» In a cyclic process, heat transfers are $+ 34.7 k J$ , $- 15.2 k J$ , $- 13.56 k J$ and $+ 21.5 k J$ . What is the net work done in the process?

Discussion

31.	The correct sequence which shows decreasing order of the ionic radii of the element is
Answer» The correct sequence which shows decreasing order of the ionic radii of the element is

Discussion

32.	Some quantity of water is contained in a container as shown in figure. As neon is added to this system at constant pressure, the amount of water vapour in the vessel.
Answer» Some quantity of water is contained in a container as shown in figure. As neon is added to this system at constant pressure, the amount of water vapour in the vessel.

32.

Some quantity of water is contained in a container as shown in figure. As neon is added to this system at constant pressure, the amount of water vapour in the vessel.

Answer»

Some quantity of water is contained in a container as shown in figure. As neon is added to this system at constant pressure, the amount of water vapour in the vessel.

Discussion

33.	Among the following which is the condition favourable for the formation of CH3OH from CO and H2 ?
Answer» Among the following which is the condition favourable for the formation of $C H_{3} O H$ from $C O$ and $H_{2}$ ?

Discussion

34.	Which of the following is not a hard water
Answer» Which of the following is not a hard water

Discussion

35.	Two samples A and B of the same gas have equal volumes and pressures. The gas in sample A is expanded isothermally to double its volume and the gas in B is expanded adiabatically to double its volume. If the work done by the gas is the same for the two cases, then γ (speciﬁc heat) satisﬁes the equation
Answer» Two samples A and B of the same gas have equal volumes and pressures. The gas in sample A is expanded isothermally to double its volume and the gas in B is expanded adiabatically to double its volume. If the work done by the gas is the same for the two cases, then $γ$ (speciﬁc heat) satisﬁes the equation

Discussion

36.	Which one of the following statement(s) is/are not true about the effect of an increase in temperature on the distribution of molecular speeds in a gas?
Answer» Which one of the following statement(s) is/are not true about the effect of an increase in temperature on the distribution of molecular speeds in a gas?

Discussion

37.	Which of the following isomerism is not shown by alkenes?
Answer» Which of the following isomerism is not shown by alkenes?

Discussion

38.	In the molecule CH ≡ C -CH =CH2 , the hybridisation of C -Cbond is
Answer» In the molecule CH ≡ C -CH = $C H_{2}$ , the hybridisation of C -Cbond is

Discussion

39.	The following reaction occurs in acidic aqueous solution: H3AsO4+Zn→AsH3+Zn2+ H3AsO4 is a ______ agent in which the oxidation number of As is _______ .
Answer» The following reaction occurs in acidic aqueous solution: $H_{3} A s O_{4} + Z n \to A s H_{3} + Z n^{2 +}$ $H_{3} A s O_{4}$ is a ______ agent in which the oxidation number of $A s$ is _______ .

Discussion

40.	If a transition metal absorbs violet radiation in the visible region, its colour would be
Answer» If a transition metal absorbs violet radiation in the visible region, its colour would be

Discussion

41.	What is mean by oxidation number?
Answer» What is mean by oxidation number?

Discussion

42.	The variation of density (ρ) with temperature (T) of an ideal gas of molecular mass (M) at constant pressure is plotted as shown in figure. The pressure of the gas at state P is RT2√KM The value of K is
Answer» The variation of density $(ρ)$ with temperature (T) of an ideal gas of molecular mass (M) at constant pressure is plotted as shown in figure. The pressure of the gas at state P is $\frac{R T^{2}}{\sqrt{K} M}$ The value of K is

Discussion

43.	The most stable enolic form of 2,4-pentanedione
Answer» The most stable enolic form of 2,4-pentanedione

Discussion

44.	When a certain metal was irradiated with light of frequency 4×1016 s−1. The photoelectrons emitted had three times the kinetic energy as the kinetic energy of photoelectron emitted when the metal was irradiated with light of frequency2×1016 s−1. If the critical frequency of the metal (νo)=x×1016 s−1, then find the value of x. (given, h=6.6×10−34 Js) .
Answer» When a certain metal was irradiated with light of frequency $4 \times 10^{16} s^{- 1}$ . The photoelectrons emitted had three times the kinetic energy as the kinetic energy of photoelectron emitted when the metal was irradiated with light of frequency $2 \times 10^{16} s^{- 1}$ . If the critical frequency of the metal $(ν_{o}) = x \times 10^{16} s^{- 1}$ , then find the value of x. (given, $h = 6.6 \times 10^{- 34} J s$ ) .

Discussion

45.	Which of the following process is used in the extractive metallurgy of magnesium?
Answer» Which of the following process is used in the extractive metallurgy of magnesium?

Discussion

46.	ACl3 is trigonal pyramidal and ECl3 is trigonal planar. These two combine to give AECl6. Crystallographic studies and structural analysis reveal that AECl6 is an ionic compound. If the anion has a see-saw shape, then the shape of the cation is:
Answer» $A C l_{3}$ is trigonal pyramidal and $E C l_{3}$ is trigonal planar. These two combine to give $A E C l_{6}$ . Crystallographic studies and structural analysis reveal that $A E C l_{6}$ is an ionic compound. If the anion has a see-saw shape, then the shape of the cation is:

Discussion

47.	A solid has a BCC structure. If the distance of closest approach between the two atoms is 1.73 ∘A. The edge length of the cell is- (√3=1.73)
Answer» A solid has a BCC structure. If the distance of closest approach between the two atoms is $1.73 \circ A$ . The edge length of the cell is- ( $\sqrt{3} = 1.73$ )

Discussion

48.	is an electrophile.
Answer» is an electrophile.

Discussion

49.	When ethyne is passed through a red hot tube, then formation of benzene takes place: ΔH∘f(C2H2)(g)=230 kJ mol−1 H∘f(C6H6)(g)=85 kJ mol−1 Calculate the standard heat of trimerisation of ethyne to benzene. 3C2H2(g)→C6H6(g)
Answer» When ethyne is passed through a red hot tube, then formation of benzene takes place: $Δ H_{f (C_{2} H_{2}) (g)}^{\circ} = 230 k J m o l^{- 1}$ $H_{f (C_{6} H_{6}) (g)}^{\circ} = 85 k J m o l^{- 1}$ Calculate the standard heat of trimerisation of ethyne to benzene. $3 C_{2} H_{2} (g) \to C_{6} H_{6} (g)$

Discussion

50.	How are synthetic detergents better than soaps ?
Answer» How are synthetic detergents better than soaps ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The gas having the highest partial pressure in the atmosphere is –

Choose incorrect option

Magnesium combines with nitrogen to form a nitride, which reacts with water to form a colourless gas. The gas is:

The compound (T) is

What indicator should be used (in terms of its pKin)for the titration of 0.10 M KH2BO3 with 0.10 M HCl ?

Though bromine is less electronegative than fluorine BF3 is weaker Lewis acid than BBr3. Explain.

Observe the following reaction, and select the correct option.

Densities of two gases are in the ratio 1 : 2 and their temperatures are in the ratio 2 : 1, then the ratio of their respective pressures is

Which one of the following nuclear transformation is (n, p ) type

Which of the following is used as moderator in nuclear reactor?

A gaseous hydrocarbon gives upon combustion 0.72 g. of water and 3.08 g. of CO2. The empirical formula of the hydrocarbon is:

An amine 'X' reacts with Hinsberg reagent and the product thus obtained is soluble in KOH. The amine 'X' is

2-Methoxybutane is obtained by reacting diazomethane with

Choose incorrect option-

The wave nature of an electron was first given by

The reduced temperature for benzene is 0.7277 and its reduced volume is 0.40. Calculate the reduced pressure of benzene.

The compound 'P' formed in the above reaction is used as an analgesic and antipyretic. How many C atoms are attached to N atom in the 'P' formed?

The compound that is the most difficult to protonate is:

Which of the following is non-classical carbocation ?

The salt (A) is

p - block elements form acidic, basic and amphoteric oxides. Explain each property by giving two examples and also write the reactions of these oxides with water.

The correct order of boiling point of hydrides of nitrogen family is

QUESTION 2.14 What is meant by positive and negative deviations from Raoult's law and how the sign of ΔmixH related to positive and negative deviations from Raoult's law?

What is the major product expected from the following reaction?

The pH of milk, black coffee, tomato juice, lemon juice and egg white are 6.8, 5.0, 4.2, 2.2 and 7.8 respectively. Calculate corresponding hydrogen ion concentration in each.

Oxidants are substances that show:

Volume of a solution changes with change in temperature, then what will the molality of the solution be affected by temperature ? Give reason for your answer.

The aromatic species is/are:

Which will give most acidic solution at constant temperature when their equimolar solution is produced?

In a cyclic process, heat transfers are +34.7 kJ , −15.2 kJ, −13.56 kJ and +21.5 kJ. What is the net work done in the process?

The correct sequence which shows decreasing order of the ionic radii of the element is

Some quantity of water is contained in a container as shown in figure. As neon is added to this system at constant pressure, the amount of water vapour in the vessel.

Among the following which is the condition favourable for the formation of CH3OH from CO and H2 ?

Which of the following is not a hard water

Which one of the following statement(s) is/are not true about the effect of an increase in temperature on the distribution of molecular speeds in a gas?

Which of the following isomerism is not shown by alkenes?

In the molecule CH ≡ C -CH =CH2 , the hybridisation of C -Cbond is

The following reaction occurs in acidic aqueous solution: H3AsO4+Zn→AsH3+Zn2+ H3AsO4 is a ______ agent in which the oxidation number of As is _______ .

If a transition metal absorbs violet radiation in the visible region, its colour would be

What is mean by oxidation number?

The variation of density (ρ) with temperature (T) of an ideal gas of molecular mass (M) at constant pressure is plotted as shown in figure. The pressure of the gas at state P is RT2√KM The value of K is

The most stable enolic form of 2,4-pentanedione

Which of the following process is used in the extractive metallurgy of magnesium?

ACl3 is trigonal pyramidal and ECl3 is trigonal planar. These two combine to give AECl6. Crystallographic studies and structural analysis reveal that AECl6 is an ionic compound. If the anion has a see-saw shape, then the shape of the cation is:

A solid has a BCC structure. If the distance of closest approach between the two atoms is 1.73 ∘A. The edge length of the cell is- (√3=1.73)

is an electrophile.

When ethyne is passed through a red hot tube, then formation of benzene takes place: ΔH∘f(C2H2)(g)=230 kJ mol−1 H∘f(C6H6)(g)=85 kJ mol−1 Calculate the standard heat of trimerisation of ethyne to benzene. 3C2H2(g)→C6H6(g)

How are synthetic detergents better than soaps ?

The following reaction occurs in acidic aqueous solution: H3AsO4+Zn→AsH3+Zn2+ H3AsO4 is a agent in which the oxidation number of As is _ .